You work for a soft-drink company in the quality control division. You are interested in the...
You work for a soft-drink company in the quality control division. You are interested in the standard deviation of one of your production lines as a measure of consistency. The product is intended to have a mean of 12 ounces, and your team would like the standard deviation to be as low as possible. You gather a random sample of 15 containers. Estimate the population standard deviation at a 95% level of confidence.
12.02, 12.17, 11.99, 12.01, 11.97, 12.09, 12.02, 12.03, 12.07, 12.12, 11.79, 12.07, 12.02, 11.99, 12.02
(Data checksum: 180.38)
Note: Keep as many decimals as possible while making these calculations. If possible, keep all answers exact by storing answers as variables on your calculator or computer.
a) Find the sample standard deviation:
b) Find the lower and upper χ2 critical values at 95% confidence: Lower: Upper:
c) Report your confidence interval for σ σ : ( , )
Homework Answers
Add Answer to:
You work for a soft-drink company in the quality control
division. You are interested in the...
Quality Associates, Inc., a consulting firm, advises its clients about sampling and statistical procedures that can...
Quality Associates, Inc., a consulting firm, advises its clients
about sampling and statistical procedures that can be used to
control their manufacturing processes. In one particular
application, a client gave Quality Associates a sample of 800
observations taken during a time in which that client’s process was
operating satisfactorily. The sample standard deviation for these
data was .21; hence, with so much data, the population standard
deviation was assumed to be .21. Quality Associates then suggested
that random samples of...
The production manager at Sunny Soda, Inc. is interested in tracking the quality of the company’s...
The production manager at Sunny Soda, Inc. is interested in tracking the quality of the company’s 12-ounce bottle filling line. The bottles must be filled within the tolerances set for this product because the dietary information on the label shows 12 ounces as the serving size. The design standard for the product calls for a fill level of 12.00 ± 0.10 ounces (11.90 to 12.10 ounces). The manager collected the following sample data (in fluid ounces per bottle) on the...
Case Problem 1: Quality Associates, Inc.
Quality Associates, Inc., a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturingprocesses. IN one particular application, a client game quality associates a sample of 800 observations taken during a time in which that client's process wasoperating satisfactorily. The sample standard deviation for there data was .21 ; hence, with so much data, the population standard deviation was assumed to be .21.Quality associates then suggested that random samples of size 30...
. The production manager at Sunny Soda, Inc., is interested in tracking the quality of the company's 12-ounce bottl...
. The production manager at Sunny Soda, Inc., is interested in tracking the quality of the company's 12-ounce bottle filling line. The bottles must be filled within the tolerances set for this product because the dietary information on th label shows 12 ounces as the serving size. The design standard for the product calls for a fill level of 12 0.10 ounces. The manager collected the accompanying sample data n fluid ounces per bottle) on the production process. 1 Click...
Sample 1|Sample 2 Sample 3 Sample 4 11.91 11.55 11.62 11.62 11.69 11.52 11.59 11.75 11.82 1.90 11...
Sample 1|Sample 2 Sample 3 Sample 4 11.91 11.55 11.62 11.62 11.69 11.52 11.59 11.75 11.82 1.90 11.97 11.64 11.80 11.87 12.03 11.94 12.01 11.92 11.99 12.13 12.09 12.16 11.93 12.21 12.32 12.39 11.93 11.85 11.92 11.7611.83 11.7012.38 11.77 11 12.00 12.07 12.04 11.98 12.05 12.30 12.37 12.18 12.25 11.97 12.17 12.24 11.85 11.92 12.30 12.37 12.15 12.22 12.02 11.36 12.02 11.75 12.05 11.95 12.18 12.14 11.72 12.07 12.05 11.85 11.64 12.16 12.39 11.65 12.11 11.90 12.22 11.56 11.88 11.95...
Quality Associates, Inc., a consulting firm, advises its clients
about sampling and statistical procedures that can be used to
control their manufacturing processes. In one particular
application, a client gave Quality Associates a sample of 800
observations taken during a time in which that client’s process was
operating satisfactorily. The sample standard deviation for these
data was .21; hence, with so much data, the population standard
deviation was assumed to be .21. Quality Associates then suggested
that random samples of...
Quality Associates, Inc., a consulting firm, advises its clients about sampling and statistical procedures that can be used to control their manufacturingprocesses. IN one particular application, a client game quality associates a sample of 800 observations taken during a time in which that client's process wasoperating satisfactorily. The sample standard deviation for there data was .21 ; hence, with so much data, the population standard deviation was assumed to be .21.Quality associates then suggested that random samples of size 30...
. The production manager at Sunny Soda, Inc., is interested in tracking the quality of the company's 12-ounce bottle filling line. The bottles must be filled within the tolerances set for this product because the dietary information on th label shows 12 ounces as the serving size. The design standard for the product calls for a fill level of 12 0.10 ounces. The manager collected the accompanying sample data n fluid ounces per bottle) on the production process. 1 Click...
Sample 1|Sample 2 Sample 3 Sample 4 11.91 11.55 11.62 11.62 11.69 11.52 11.59 11.75 11.82 1.90 11.97 11.64 11.80 11.87 12.03 11.94 12.01 11.92 11.99 12.13 12.09 12.16 11.93 12.21 12.32 12.39 11.93 11.85 11.92 11.7611.83 11.7012.38 11.77 11 12.00 12.07 12.04 11.98 12.05 12.30 12.37 12.18 12.25 11.97 12.17 12.24 11.85 11.92 12.30 12.37 12.15 12.22 12.02 11.36 12.02 11.75 12.05 11.95 12.18 12.14 11.72 12.07 12.05 11.85 11.64 12.16 12.39 11.65 12.11 11.90 12.22 11.56 11.88 11.95...
Most questions answered within 3 hours.
-
A siren on an emergency car moving with velocity 90 km/hour
produces the sound with frequency...
asked 2 minutes from now -
Consider the schema below that models a bank’s branches,
customers and their accounts and loans. Provide...
asked 5 minutes ago -
What kinds of policies should be considered when individuals
decisions may likely impact public expense? For...
asked 13 minutes ago -
The financial statements of Apple Inc. show the following
numbers for fiscal year 2017 ($000,000):
Revenue...
asked 18 minutes ago -
Suppose that you are given the following results. Find the
correlation coefficient of the data.
sx...
asked 27 minutes ago -
The width of a tool used for semiconductor manufacturing
is assumed to be normally distributed with...
asked 29 minutes ago -
A
runaway train car that has a mass of 1,400 kg travels at a speed of...
asked 33 minutes ago -
The expected abnormal earnings of a firm that has earnings of
$40,000 with a required equity...
asked 32 minutes ago -
A spherical surface completely surrounds a collection of
charges. Find the electric flux through the surface...
asked 47 minutes ago -
Two capacitors with capacitances of 12 and 18.1 µF,
respectively, are connected in parallel. The system...
asked 34 minutes ago -
Let's say you are a small business owner that provides
business-to-business software-as-a-service to non-profit
organizations. Your...
asked 39 minutes ago -
A circuit is constructed with five resistors and a battery as
shown. The battery voltage is...
asked 47 minutes ago